Google stopped indexing flash content recently too. They were indexing it this whole time cause of how much legacy content is out there.
<a href="https://techcrunch.com/2019/10/29/the-slow-death-of-flash-continues-as-google-begins-to-remove-it-from-search/" rel="nofollow">https://techcrunch.com/2019/10/29/the-slow-death-of-flash-co...</a>